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/**************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Installer Framework.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
**************************************************************************/
#include "extractarchiveoperation_p.h"
#include "constants.h"
#include <QEventLoop>
#include <QThreadPool>
#include <QFileInfo>
namespace QInstaller {
ExtractArchiveOperation::ExtractArchiveOperation(PackageManagerCore *core)
: UpdateOperation(core)
{
setName(QLatin1String("Extract"));
}
void ExtractArchiveOperation::backup()
{
// we need to backup on the fly...
}
bool ExtractArchiveOperation::performOperation()
{
if (!checkArgumentCount(2))
return false;
const QStringList args = arguments();
const QString archivePath = args.at(0);
const QString targetDir = args.at(1);
Receiver receiver;
Callback callback;
connect(&callback, &Callback::progressChanged, this, &ExtractArchiveOperation::progressChanged);
if (PackageManagerCore *core = packageManager()) {
connect(core, &PackageManagerCore::statusChanged, &callback, &Callback::statusChanged);
}
Runnable *runnable = new Runnable(archivePath, targetDir, &callback);
connect(runnable, &Runnable::finished, &receiver, &Receiver::runnableFinished,
Qt::QueuedConnection);
QFileInfo fileInfo(archivePath);
emit outputTextChanged(tr("Extracting \"%1\"").arg(fileInfo.fileName()));
QEventLoop loop;
connect(&receiver, &Receiver::finished, &loop, &QEventLoop::quit);
if (QThreadPool::globalInstance()->tryStart(runnable)) {
loop.exec();
} else {
// HACK: In case there is no availabe thread we should call it directly.
runnable->run();
receiver.runnableFinished(true, QString());
}
// Write all file names which belongs to a package to a separate file and only the separate
// filename to a .dat file. There can be enormous amount of files in a package, which makes
// the dat file very slow to read and write. The .dat file is read into memory in startup,
// writing the file names to a separate file we don't need to load all the file names into
// memory as we need those only in uninstall. This will save a lot of memory.
// Parse a file and directorory structure using archivepath syntax
// installer://<component_name>/<filename>.7z Resulting structure is:
// -installerResources (dir)
// -<component_name> (dir)
// -<filename>.txt (file)
QStringList files = callback.extractedFiles();
QString fileDirectory = targetDir + QLatin1String("/installerResources/") +
archivePath.section(QLatin1Char('/'), 1, 1, QString::SectionSkipEmpty) + QLatin1Char('/');
QString archiveFileName = archivePath.section(QLatin1Char('/'), 2, 2, QString::SectionSkipEmpty);
QFileInfo fileInfo2(archiveFileName);
QString suffix = fileInfo2.suffix();
archiveFileName.chop(suffix.length() + 1); // removes suffix (e.g. '.7z') from archive filename
QString fileName = archiveFileName + QLatin1String(".txt");
QFileInfo targetDirectoryInfo(fileDirectory);
QDir dir(targetDirectoryInfo.absolutePath());
if (!dir.exists()) {
dir.mkpath(targetDirectoryInfo.absolutePath());
}
QFile file(targetDirectoryInfo.absolutePath() + QLatin1Char('/') + fileName);
if (file.open(QIODevice::WriteOnly)) {
setDefaultFilePermissions(file.fileName(), DefaultFilePermissions::NonExecutable);
QDataStream out (&file);
for (int i = 0; i < files.count(); ++i) {
files[i] = replacePath(files.at(i), targetDir, QLatin1String(scRelocatable));
}
out << files;
setValue(QLatin1String("files"), file.fileName());
file.close();
} else {
qWarning() << "Cannot open file for writing " << file.fileName() << ":" << file.errorString();
}
// TODO: Use backups for rollback, too? Doesn't work for uninstallation though.
// delete all backups we can delete right now, remember the rest
foreach (const Backup &i, callback.backupFiles())
deleteFileNowOrLater(i.second);
if (!receiver.success()) {
setError(UserDefinedError);
setErrorString(receiver.errorString());
return false;
}
return true;
}
bool ExtractArchiveOperation::undoOperation()
{
Q_ASSERT(arguments().count() == 2);
// For backward compatibility, check if "files" can be converted to QStringList.
// If yes, files are listed in .dat instead of in a separate file.
bool useStringListType(value(QLatin1String("files")).type() == QVariant::StringList);
QString targetDir = arguments().at(1);
QStringList files;
if (useStringListType) {
files = value(QLatin1String("files")).toStringList();
} else {
if (!readDataFileContents(targetDir, &files))
return false;
}
startUndoProcess(files);
if (!useStringListType)
deleteDataFile(m_relocatedDataFileName);
return true;
}
void ExtractArchiveOperation::startUndoProcess(const QStringList &files)
{
WorkerThread *const thread = new WorkerThread(this, files);
connect(thread, &WorkerThread::currentFileChanged, this,
&ExtractArchiveOperation::outputTextChanged);
connect(thread, &WorkerThread::progressChanged, this,
&ExtractArchiveOperation::progressChanged);
QEventLoop loop;
connect(thread, &QThread::finished, &loop, &QEventLoop::quit, Qt::QueuedConnection);
thread->start();
loop.exec();
thread->deleteLater();
}
void ExtractArchiveOperation::deleteDataFile(const QString &fileName)
{
if (fileName.isEmpty()) {
qWarning() << Q_FUNC_INFO << "data file name cannot be empty.";
return;
}
QFile file(fileName);
QFileInfo fileInfo(file);
if (file.remove()) {
QDir directory(fileInfo.absoluteDir());
if (directory.exists() && directory.isEmpty())
directory.rmdir(directory.path());
} else {
qWarning() << "Cannot remove data file" << file.fileName();
}
}
bool ExtractArchiveOperation::testOperation()
{
return true;
}
bool ExtractArchiveOperation::readDataFileContents(QString &targetDir, QStringList *resultList)
{
const QString filePath = value(QLatin1String("files")).toString();
// Does not change target on non macOS platforms.
if (QInstaller::isInBundle(targetDir, &targetDir))
targetDir = QDir::cleanPath(targetDir + QLatin1String("/.."));
m_relocatedDataFileName = replacePath(filePath, QLatin1String(scRelocatable), targetDir);
QFile file(m_relocatedDataFileName);
if (file.open(QIODevice::ReadOnly)) {
QDataStream in(&file);
in >> *resultList;
for (int i = 0; i < resultList->count(); ++i)
resultList->replace(i, replacePath(resultList->at(i), QLatin1String(scRelocatable), targetDir));
} else {
setError(UserDefinedError);
setErrorString(tr("Cannot open file \"%1\" for reading: %2")
.arg(QDir::toNativeSeparators(file.fileName())).arg(file.errorString()));
return false;
}
return true;
}
} // namespace QInstaller
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